111826-01F
For more information, visit www.desatech.com
17
17
BURNER FLAME PATTERN
Figure 24 shows correct burner fl ame pattern.
NOTICE: Do not mistake orange fl ames with yellow
tipping. Dirt or other fi ne particles are burned by heat er,
causing brief patches of orange fl ame.
If burner fl ame pattern is incorrect, as shown in Figure 25
• turn heater off (see
To Turn Off Gas to Appliance
, page 15)
• see
Troubleshooting
, pages 19 through 21
INSPECTING BURNERS
Check pilot fl ame pattern and burner fl ame patterns often.
PILOT FLAME PATTERN
Figure 22 shows a correct pilot fl ame pat tern. Figure 23 shows an
incorrect pilot fl ame pattern. The incorrect pilot fl ame is not touch ing
the thermo couple. This will cause the thermo couple to cool. When
the thermo couple cools, the heater will shut down.
If pilot fl ame pattern is incorrect, as shown in Figure 23
• turn heater off (see
To Turn Off Gas to Appliance
, page 15 (Re-
mote-Ready Models])
• see
Troubleshooting
, pages 19 through 21
Note:
The pilot fl ame on natural gas units will have a slight curve,
but fl ame should be blue and have no yellow or orange color.
Figure 22 - Correct Pilot Flame Pattern (Your pilot may vary
from pilots shown)
Figure 24 - Correct Burner Flame Pattern
Figure 25 - Incorrect Burner Flame Pattern
Yellow Tipping At Top
of Blue Flame
INSPECTING BURNERS
Pilot Flame Pattern
Burner Flame Pattern
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
Figure 23 - Incorrect Pilot Flame Pattern (Your pilot may vary
from pilots shown)
Thermocouple
Pilot Burner
Pilot Burner
Thermocouple
